diff options
| author | Ryder Lee <ryder.lee@mediatek.com> | 2021-07-14 17:18:48 +0800 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-10-20 10:36:27 +0200 |
| commit | ffbebe7649c32139e765e9c64838a7d0a28bbd24 (patch) | |
| tree | 228347eb538927970a5941e074eeb9f9c9206a26 /drivers/net | |
| parent | d45dac0732a287fc371a23f257cce04e65627947 (diff) | |
mt76: mt7915: take RCU read lock when calling ieee80211_bss_get_elem()
As ieee80211_bss_get_elem() derefences an RCU to return ie, both
the call to this function and any operation on this variable need
protection by the RCU read lock.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index bab652eae434..2ba3d92ebd70 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -923,12 +923,15 @@ static void mt7915_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, struct mt7915_he_obss_narrow_bw_ru_data *data = _data; const struct element *elem; + rcu_read_lock(); elem = ieee80211_bss_get_elem(bss, WLAN_EID_EXT_CAPABILITY); if (!elem || elem->datalen <= 10 || !(elem->data[10] & WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) data->tolerated = false; + + rcu_read_unlock(); } static bool mt7915_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, |